Classificazione / Nomi
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Siluriformes (Catfishes) >
Pseudopimelodidae (Bumblebee catfishes, dwarf marbled catfishes) > Pseudopimelodinae
Etymology: Rhyacoglanis: From the Greek words 'rhyax' (torrent) and 'glanis' (catfish), indicating a catfish inhabiting running waters in reference to its habitat (Ref. 128485); varii: Name 'varii' in honor of ichthyologist Richard P. Vari (1949-2016) for his outstanding contributions to the systematics of Neotropical fishes.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical
South America: Brazil.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 6.9 cm SL maschio/sesso non determinato; (Ref. 137787)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 6; Raggi anali molli: 5 - 6. This species is distinguished from its congeners by the following set of characters: dark brown vertical bar below the dorsal-fin base not confluent with a dark brown bar below the adipose-fin base; abrupt thinning of the subdorsal dark brown bar ventrally; dark brown spots sparsely distributed on the body; solid dark brown bar on caudal peduncle; posterior tip of the post-cleithral process reaching vertical through the base of the dorsal-fin spine; long distance of anus to anal-fin origin (mean = 11.4±0.8%), maxillary barbel length (mean = 79.6±5.8%), and caudal peduncle depth (mean = 9.5±0.5%); minor posterior nostril to eye distance (mean = 4.8±0.9%), body depth (mean = 18.2±1.5%), and postcleithral process length (mean = 12.9±1.1%); anterior serrae distributed along the entire margin (Ref. 137787).
Cross section: oval.
This species inhabits shallow, running water with substrate composed of pebbles, rocks, sand, and organic litter from the surrounding marginal vegetation (Ref. 137787).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Shibatta, O.A. and L. Souza-Shibatta, 2023. New species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from
the upper rio Tocantins basin. Neotrop. Ichthyol. 21(1):e220075. (Ref. 137787)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00550 (0.00229 - 0.01319), b=3.11 (2.90 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.4 ±0.5 se; based on size and trophs of closest relatives |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |